.dialog-container {
  .mask {
    position: fixed;
    background: rgba(0, 0, 0, .6);
    width: 100%;
    height: 100%;
    z-index: 999;
  }
  .dialog {
    position: fixed;
    width: 600px;
    height: 400px;
    background: #fff;
    border-radius: 8px;
    z-index: 1100;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    padding: 20px 20px 30px;
    .close {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      position: absolute;
      top: -55px;
      right: 0;
      background: url(../../images/student/close_icon.png) no-repeat;
      background-size: 100%;
      background-position: center;
      z-index: 10000000000;
      cursor: pointer;
      &::after {
        content: '';
        display: block;
        height: 23px;
        border-left: 1px solid #fff;
        position: absolute;
        left: 16px;
        top: 32px;
        z-index: 1000;
      }
    }
  }
}